Concrete reinforcement.



E. MOGLURE. I

CONCRETE REINFORCEMENT.

APPLICATION FILED we. a, 1910.

Patented May 23, '1911.

- fwmzz/zwae all (9 UNITED STATES PATENT OFFICE.

- EDWARD MoGLURE OE CHICAGO, ILLINOI S, ASSlIGNOR OF ONE-HALF 1'0 P. i

, SMITH, OF CHICAGO, ILLINOIS CONCRETE REINFORCEMENT.

Specification of Letters Patent.

v Patented May 23, 1911.

Application filed. August 8, 1910. serialflo. 576,088,

cago, in the county of Cook-and State of .5 -'I1linois, have invented'new"and usefullImprovements in Concrete Reinforcements, of which thefollowing isa specification.

I This inventionlrelate's to concrete reinforcements and moreparticularly to that class of reinforcements used in reinforcedconcrete'columns for resisting the lateral or transverse stresses thatoccur therein.

. The object of this; inventionis to a reinforcementunit of this classwhich may be collapsed into condensed form for transportation orstorage, and which maybe readily extended into operative condition foruse in the column. v

To such ends this invention consists in a reinforcement for resistinstresses in columns, and having spaced, en-

. circling reinforcement members and one or more spacing membersdirectly secured thereto in such manner that the whole may be collapsedupon itself into compact form orextended into operative condition.

v Th'e invention further consists in the several novel features ofconstruction and arrangement set forth in the following s ecifi cationandparticularly pointed out in the claims.

The invention is clearly illustrated in th drawing furnished herewith,in which- M Figure 1 is a side elevation ofa reinforcement embodying thepreferred form of the invention and showing the same in its extended oroperative position, Fig. 2 is an .end view'thereof, Fig. 3 is a sideelevation of the reinforcement shown .in Fig. 1, but

illustrating the same in its collapsed condition, Fig. 4 is an end .viewof the reinforcement in its collapsed condition and Fig. 5 is afragment-a1 side View of a spacing member showing a number of theencircling members in cross section and secured upon said spacingmember.

Referring to the drawings, which show an embodiment of the preferredform of'the invention, an encircling reinforcement element- 10, will beseen, which element is adapted to act as a reinforcement for reinforcedconcrete columns and arranged to resist the lat-ral or transversestresses that occur therein. Said encircling reinforcement ele- 55 meatmay be made in various forms, and as the lateral showncom rises as ii'alband, the coils or turns of w ich may e spaced apart to suittheparticular conditions in any given case. Said s 'piral band. maybemade -of-round "rod-- or wire of proper diameter, but it is obviousgoothat various other forms of strain resist'ni elements may be used.For'mainta-ining the coils of said encircling reinforcement elev ment.in spaced relation to each other, s acing members 11, 11*, are provided,whic as shown may have-seats 12, adapted to receive the coils of theencircling reinforcerov1de ment element 10. It is preferred to securesaid encircling members in the seats 12, and to accomplish this,overhanging portions are provided upon the spacing member, which asshown may comprise tongues 13, that ma I be clenched overthe portions.of the e circling members confined in the seats.

' Many forms of spacing members are ell known tothose skilled in theart, and may be substituted for the one shown in the drawings withoutdeparting from the spirit of this invent-ion. I

It is preferred to employ two more spacing members, 'two of which 11",re an ranged diametrically oppositeto each other as shown in Figs. 1 and2, which spacin members actnot only to space the severa coils or turnsof the encircling reinforcement elements, but toprovide means wherebysaid encircling reinforcement may be" moved into condensed'conditiori.When the particular formof spacing, member shown in the drawing isused',the tongues 13 may. '90 be clenched down 11 on the encircling memberssufficiently to retain the ,sameui their seats, butnot firmly enoughzt'oprevent the 1 several .coils' of the encirclingireinfopcements fromturning in the seats. When Emp're than twospacing members are used-1nthe dev ce,

said extra spacing member or members should be loosely- 'se'cured uponthe encircling members so that they may be slid around upon theencircling members until brought adjacent tothe stationary spacingmembers 11. When only two spacingmembers are used, it is evident thatthe reinforcement may be collapsed into condensed form by simply forcing"the spacing members 11, in opposite directions as indicated by the arrows a, in Fig. 1, until the parts are brought into the collapsedcondition seen in Fig. 3.

In this condition the parts are brought into the compact form and theparts may be easily handled and will occupy considerably less space thanthe parts would in their extended form. To bring said condensedreinforcement into operative position, the bars,

the other spacing members are first shifted around until they occupy theposition shown in dotted lines in Fig. 2; that is to say, they arebrought close to the stationary spacing members 11, so that l the seatsthereof will be in register with 1 each other, whereby the seats willact as fulcrums or hearings, in which the several coils of theencircling element may turn.

This form may then be condensed by simply shifting the groups of spacingmembers lon- 'git-udin'ally in opposite directions as before,

and the. reinforcement may be extended into operative form by.re-shifting the spacing I members and'subsequently moving theintermediate spacing members into such positions that all will besymmetrically disposed with respect to each other. After this has beendone, the tongues of the spacing members may be clenched down ifdesired, to more rigidly fasten the encircling members to. the

spacing members.

The advantages of this device are readily apparent. The condensedstructure can be handled easier, occupiesless room in storage, andreduces the cost of transportation on account of the reduction of spaceoccupied. While I have shown and described the preferred form of theinvention, it is to be understood that various modifications andarrangements of the several'parts 'may be made without departing fromthe spirit of the invention, and I do not desire, therefore, to limit,myself to the exact construction shown and described, except as may bei545 necessitated by the state of the art. 'I claim as new and desire tosecure by Letters Patent:

' 1. A reinforcement for reinforced concrete 4 columns, comprising anencircling reinforcement element having a plurality of spaced encirclingmembers, and spacing bars for said encircling reinforcement elementhaving notches in which the reinforcement members of. the reinforcementelement are rotatively securedy'and having overhanging portions forloosely holding said encircling members in the notches, whereby saidspacing'members' may be shifted longitudinally of themselves t0bring-said encircling reinforcement into collapsed form.

2. A reinforcement for reinforced concrete columns, comprising anencircling reinforcement element having a plurality of encirclingmembers, a pair of diametrically opposed spacing members having seatsformed therein for receiving and spacing apart said encircling membersand overhanging por-v tions for loosely. retaining said encirclingmembers in their seats, said seats acting as bearings in which theencircling members may turn,'whereby said spacing members may be shiftedrelative to each other to collapse the reinforcement into compact form.

3. A reinforcement for reinforced concrete columns, comprising a spiralreinforcement,

a pair of diametrically opposed spacing" members. having seats formedtherein at definite, fixed, pointsfthereon for loosely receiving andspacing the several coils of the spiralreinforcement member, saidspacing members being adapted to be shifted relative to each other tocollapse the reinforcement into compact form. a

4. A reinforcement for reinforced concrete columns, comprising a spiralreinforcement member formed of a round rod, a pairof diametricallyopposed spacin members,

having notches formed therein or receiving and spacing apartthe severalcoils of the spiral reinforcement member and overhang ing tonguesarranged to loosely secure said coils upon the spacing members, saidspacmg members being adapted to be shifted relative to each other tocollapse the-spiral reinforcement into compact form.

5. A concrete column reinforcement unit, comprising a spiral band andspacing bars for spacing the coils apart, the several COllS of the bandbeing rotatively secured in seats formed in said spacing bars, and beingcapable of movement into collapsed form while connected with the spacingmembers.

In witness whereof I have hereunto subscribed my name at Chicago, Cookcounty, Illinois, this 1st day of August 1910.

EDWARD MCCLURE.

Witnesses:

FANNm F. RICHARDS, CHARLES O. SHERVEYI',

